Cabinet bxieb



H. BENTZ.

CABINET DRIER.

APPLICATION FILED APR. e, 1921.

1,425,314, A Patente-Mug. 8, 1922.

Syl/vanto@ l Ham-1y BEM-z para HARRY BENTZ, MONTCLAIR, 'NEW JERSEY.

CABINET DRIER.

Application filed April 6, 1921.` Serial No. 158,933.v i

T 0 all w hom t may concern Be it known that 1. HARRY Bnrrrma citizen of the United States, residing in the city or lv/iontclair, in the county ot Essex, State of New Jersey, have invented certain new and useful lmprovenientsin Cabinet Driers, of which the following is a `full, clear, and complete description.,

My invention relates to the art of drying materials and has as its principal object the provision of an apparatus of great compact'- ness in proportion to its output capacity oit dried material.

Further objects and advantages in the apparatus according to my invention will be evident to those skilled in the-art from the following description taken in 4connection with the accompanying` drawing in which-#- Fig. 1 is an elevational view of an apparatus according to my invention.

Fig. 2 is a plan view of the apparatus according to Fig. 1.

Fig. 3 is an elevational view taken from` the lett ot Fig. 1, part being broken away.

In the drawing, 1 is an intake chamber ttor air and contains heating elements or members 2 of any desired type. From chamber 1 air is drawn through a pipe t into a t'an casing r5 and thence discharged by the tan in casing 5 into a throat 6. Throat 6 is at the lower level of the apparatus and enlarges in the direction of ow ot the air into a combined inlet and outlet chamber 7. Chamber 7 also enlarges in the direction of flow of the air, the larger or wider end of chamber 7 extending across one side of cabinet 8 along the base of the cabinet. Cabinet 8 has a central vertical partition 9 therein, the lower portion oi which projects into the chamber 7 at 10. The interior oi cabinet 8 communicates with chamber 7 on both sides, the projection 10 and a gate 11 being hingedto said projection at 12. Gate 11 is sutiiciently long so that it contacts with the walls of chamber 7 when thrown in either direction from the middle of the chamber, gate 11 striking the walls of chamber 7 near the inlet end ot the chamber. As illustrated in Fig. 2, it gate 11 isfthrown so as to contact with the lett hand vertical wall 'of chamber 7, it is then roughly parright hand side of cabinet 8 at the bottom ot the cabinet.

Each of the vertical walls of chamber 7 has an openingtherein and l provide doors 13, 13 for said openings, doors 13 being connected to gate 11 by links 14, 14, so that, as the gate 11 'is thrown to one side or the other ot' chamber 7, the door 13 on the side toward'which the gate movesis thrown open, the other ott doors 13 being closed at the Same time.

The ate 11 being thrown, Jfor instance, to the eft, air passes to the cabinet along the right of gate 11, the right hand door l13 beingyclosed. After passing through chamber 7 ,airpasses upward through cabinet 8 at the right of the partition 9, overthe top of partition 9 and down within cabinet 8 onthe left side of partition 9. From the` bottom of cabinet k8 air passes into chamber 7 again, but kon the left of the gate 11, and thence escapes through the leit hand doorway, the left hand door 13 being open.

On the side farther from the fan 5 and chamber 7, the cabinet 8 is provided with two doors, such as 15, through which trays 16 :for carrying material to be dried may be introduced into and removed from the cabinet 8. Angles 17 are provided within cabinet 8 on which trays 16 are supported. Trays 16 may be of the perforated type, but

lwhendrying certain material, such as crystals, it is preferable that the trays have nonperforated bottoms. In this case, l make the trays 16 of somewhat less length than that ofthe cabinet 8 and when placing the trays in the cabinet alternate trays are pushed into the cabinet as far as possible, and alternate trays kept as close to doors 15 as possible. The air current vrising and descending. in the cabinet on opposite sides of partition 9 must then liow around the trays, as indicated by the arrows in Fig. 1.

In the operation of the apparatus according to my invention, the material in the trays is first subjected to the cooler and more humid air of the down liowing current in cabinet 8. When the material in contact with the warmer and drierk rising current of air is sufficiently dry, the trays containing the dried material may be removed, trays containing material to be treated substituted for those removed, and the gate 11 swung to reversethe flow ot air in cabinet 8. However, I do not limit myself to the manner oi inserting and removing trays just described.

Doors l5 are provided with suitable latch means7 such as illustrated at 18.

lt will be seen that an apparatus according to my present invention is Compact, economical of manufacture, and has a high output of dried materials. It is particularly well adapted to dryingi Crystals, preeipitates or other Chemicals, although not limited to sueh uses.

Having thus described my invention., l claim:

l. A drying` apparatus comprising` in conibination a cabinet-having a partition `forming` two adjacent passage ways within the Cabinet Connected in series, means for supporting material to be dried within said passageways, means for forcing drying` Lgas through said cabinet, and means for reversing,` the flow of gas in said passageways, said means comprising Chamber Communicatingk with both said passageways at the same end, said chamber having` outlet apertures therein, Closures for said apertures, and valve means within said chamber forvehanging,` the passageway into which the air flows.

2. A drying apparatus Comprising in oombination a cabinet'havinga partition forminra)` two Connectedy passageways within the cabinet7 means for supporting:material to be dried within said passageways,means tor forcing drying gas through said Cabinet, and means for reversing the flow ot-gas in said passageways, said means comprising` a chamber Communicating` with bothsaid passageways at the same end, saidehaniber having` outlet apertures therein, closures torv said apertures, valve means Within said chamber for changing the passageway into which the air flows, and means connecting said closures whereby one is held open when another is Closed.

3. A dryingapparatus comprising in combination a cabinet having two vertical passageways therein connected at the top, means for supporting trays in said passageways7 means for forcing drying gas in at the bottom ot one and out at the bottom et the other or" said passageways, means whereby the flow ot gas may be reversed, said last means comprisinga chamber communicating with both said passageways at the same end and havingA two apertured wallsq a hinged gate within said chamber, the tree end of w iieh is adapted to Contact with the walls of the chamber having apertures therein, Closures for said'apertures and connections between said gate and said closures whereby one Closure is opened as another is closed.

t. A dryingr apparatus comprising in Coinbination a cabinet having a vertical partition therein formino` two passageways, said passageways being' connected at the top, aV

chamber connecting. with said passageways at the bottom, said partition projecting into said chamber, a gate hinged. to said projecting portion and adapted to swini into Contact with the walls ot the eh amber whereby air is directed into one or the other ot said passageways, said chamber haring` apertures therein7 closures for said apertures, and Connections' between said gate and said closures whereby the closures are moved by said gat-e to open one aperture as the other one is Closed.

HARRY BENTZ. 

